The gravitational attraction between two objects will blank if the objects move further apart

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

The energy released by a nuclear fusion reaction is produced when

Cho is making a bar graph showing the amount of money spent on health care between 1999 and 2005. the dependent variable is the: a: money spent b: year c: number of patients